Neptune PM2 Conductivity, Salinity & Temperature Expansion Module

Reliable Salinity and Conductivity Monitoring for Your Aquarium

Consistent salinity is vital for your aquarium’s inhabitants’ well-being. The Neptune PM2 Expansion Module continuously monitors salinity levels, instantly alerting you to any deviations to help you maintain a safe, stable aquatic environment.

Key Features

• • Monitor/Control Conductivity, Salinity, and Temperature

  • 4 Measurement Ranges:

    • 0–900 µS/cm

    • 0–90.0 mS/cm

    • 0–50 ppt

  • 6 Digital Inputs for float switches, leak sensors, pressure sensors, and more

  • Full Datalogging Support via your Apex Base Module

  • Plug and Play — instantly recognized when installed

  • Two AquaBus Connectors for flexible system expansion

  • LED Status Indicator for at-a-glance monitoring

  • Upgradeable Firmware for future-proof operation

  • Galvanic Isolation ensures accurate and reliable readings

  • Includes 3′ AquaBus Cable